@misc{indiciaeee99b4b068e4,
  title = {Structure and oil and gas resources of the Osage Reservation, Oklahoma. T. 25 N., R. 9 E.},
  author = {K. C. Heald},
  year = {1922},
  doi = {10.3133/b686e},
  url = {https://pubs.usgs.gov/publication/b686E},
  note = {Source identifier: b686E}
}